| Rank | Precipitation | Date |
|---|---|---|
| 1 | 9.2 cm | July 30, 1865 |
| 2 | 8.9 cm | July 2, 1907 |
| 3 | 8.0 cm | August 14, 1860 |
| 4 | 7.8 cm | July 12, 2000 |
| 5 | 6.9 cm | July 31, 2006 |
| 6 | 6.6 cm | July 31, 1863 |
| 7 | 6.5 cm | July 29, 1957 |
| 8 | 6.4 cm | July 31, 1867 |
| 9 | 6.3 cm | November 9, 1866 |
| 10 | 6.2 cm | June 17, 2016 |
| 11 | 6.1 cm | July 10, 1882 |
| 12 | 5.9 cm | August 17, 1930 |
| 13 | 5.6 cm | August 21, 1912 |
| 14 | 5.4 cm | September 2, 1913 |
| 15 | 5.4 cm | February 28, 1866 |
| 16 | 5.2 cm | October 11, 1867 |
| 17 | 5.1 cm | July 30, 2018 |
| 18 | 5.1 cm | December 29, 1867 |
| 19 | 5.0 cm | June 27, 1985 |
| 20 | 4.9 cm | July 24, 2010 |